NCERT Class 10 Solutions: Real Numbers (Chapter 1) Exercise 1.4 –Part 2
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In the questions, below find the types of decimals.
Q.III)
Is terminating if

p and q are coprime

q is of the form Where n and m are nonnegative integers
Checking Coprime
64 and 455 have no common factors, so, 64 and 455 are coprime
For denominator 455
Hence
So, denominator is not of the form
Thus has a nonterminating repeating decimal
Q.IV)
Is terminating if

p and q are coprime

And q is of the form Where n and m are nonnegative integers
Checking Coprime
3 and 320 have no common factors, so, 3 and 320 are coprime
For denominator 320
Hence
So, denominator is of the form
Where
Thus i.e. is terminating decimal
Q.V)
Is terminating if

p and q are coprime

And q is of the form Where n and m are nonnegative integers
Checking Coprime
29 and 343 have no common factors, so, 29 and 343 are coprime
For denominator 343
Hence
So, denominator is not of the form
Thus has a nonterminating repeating decimal